Thanks those who supported me. It helps me to continue doing what I’m doing. My new collection of textures will appear UE Marketplace on November 11. It contains 20 metallic textures. As it took much less time to create it, and they didn’t require such elaboration as my architectural textures, the price will be significantly lower. Hope everyone will be satisfied.
And as said SaOk: you really can purchase these textures separately at www.CrazyTextures.com. The textures have been tested for UE in the first place, but – since my customers might use other game engines – each map(diffuse, specular, roughness, height, normal) is saved in a separate file there.